1. National Center for Trauma, National Center for Mental Health, Seoul, Korea.
2. Department of Stress and Anxiety Disorder, National Center for Mental Health, Seoul, Korea.
3. Department of Child and Adolescent Psychiatry, National Center for Mental Health, Seoul, Korea.
4. Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
6. Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.